Out comes my LN 60 1/2 R block plane with A2 iron, which I bought years ago, but only rarely used.
My feelings toward A2 is along are similar to Warren's. It did seem to chip less after a number of sharpenings. It seems some chipping may be due to the forces of impact.
As Derek mentioned, a low angle rabbet plane isn't a good substitute for a low angle block plane.
jtk
"A pessimist sees the difficulty in every opportunity; an optimist sees the opportunity in every difficulty."
- Sir Winston Churchill (1874-1965)